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My New Understanding about vanadium element

 
11-May-2012

 

Vanadium, an important strategic material, has many good properties. An alloy containing vanadium may have a higher strength and a lower thermal swelling coefficient. The abundance of vanadium in the Earth is about 0.02%, higher than those of copper, zinc, nickel and chromium. It ranks 13th in abundance among the elements in the crust and usually occurs as a vanadium-bearing mineral or isomorphous substance.

Vanadium was discovered as early as 1830, but did not attract the attention of the industrial community until the latest 19th century when people found that it could markedly improve the mechanical performance of steel. At the beginning of the 20th century vanadium was first extracted from patronite of a pitchblende mine in Peru. Due to the increase in demand, Americans recovered vanadium as a by-product or exclusively produced it while extracting uranium from carnotite in the 1930s. In the mid-1950s, a technique of obtaining vanadium slag from V-Ti-magnetite was developed in the world. In the early 1960s, the former Soviet Union began to use V-Ti-magnetite on a large scale, making it a principal raw material for vanadium extraction.

In China, the development and utilization of vanadium commenced in the early 1950s. During the first 20-odd years, vanadium was extracted mainly from stone coal, but the supply fell short of the demand, making it a must to import the material to bridge the gap. Since the technological flow sheet of extracting the associated vanadium from the V-Ti-magnetite ore of the Panzhihua mine was put into operation in 1978, the situation of relying on imports has been changed fundamentally. In the mid-1970s, owing to the maturation of the technique of extracting vanadium from stone coal, the abundant stone coal resources in China also became an important source of vanadium.Henan Hongxing Mining Machinery Co., Ltd is the professional manufacturer of complete sets of mining machinery, for example,rotary dryer,vibrating feeder Welcome all of you to visit our official website.china sand washers:http://www.hx-china.com/9.html

Vanadium is widely used in iron and steel, chemical, mechanical, electronic and other industries. In metallurgical industry it is used chiefly for ferrous and nonferrous alloys and for cutting, pressure-resistant and abrasive parts. In chemical industry, V2O5 is utilized as a catalyst in organic and inorganic oxidation reactions, sulfuric acid production, oil refining and dye production and as a colorant for glass that can absorb ultraviolet and thermal radiations and for ceramics. Of the global consumption of vanadium, 85% is for the iron and steel industry, 9% for the nonferrous and rare metal alloy industry, 3% for the chemical industry, 1% for cast iron industry and 2% for others. In China, the vanadium consumption by the steel industry is compartively small (about 78% of the total) but that by the chemical industry is large (about 10%). 

 
Category : Professional
 
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